Home / 21,002.90-31,504.34-14,409.09

Finding the Fourth Proportional to 21,002.90, 31,504.34 and 14,409.09

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Solution

The fourth proportional to 21,002.90, 31,504.34 and 14,409.09 is: 21,613.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.90 : 31,504.34 = 14,409.09 : x
  2. Step 2: Convert to fraction form
    21,002.90/31,504.34 = 14,409.09/x
  3. Step 3: Cross multiply
    21,002.90x = 31,504.34 × 14,409.09
  4. Step 4: Simplify right side
    21,002.90x = 453,948,906.47
  5. Step 5: Solve for x
    x = 453,948,906.47/21,002.90
  6. Step 6: Final answer
    x = 21,613.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.